Disk Cleanup utility uses sagset/sagerun command line options in combination with the Task Scheduler to automate disk clean.

/sageset:n - Displays Disk Cleanup Settings and stores the selected values in the Registry. 'n' can be any integer from 0 to 65535. You can select different Disk Cleanup Settings and assign a value for each of them. For example, you can assign a value of '1' to clear Temporary Files and schedule it to run on a daily basis and assign a value of '2' to delete Recycle bin and schedule it to run on a weekly basis and so on.

/sagerun:n - This runs the tasks that are defined by sageset:n

Setting Up

• Select Start > Run and enter cleanmgr /sageset:100 in the dialog box ( You can enter any value from 0 to 65535 as the value).
  

• Click 'OK'. Disk Cleanup Settings window appears.

• Select the files to be deleted by cleanmgr and click OK.
• Open Service panel and ensure 'Task Scheduler' service is running. If not, start the 'Task Scheduler' and proceed with the below mentioned steps.
• Select Start > Programs > Accessories > System Tools > Scheduled Tasks.
• Open Add Scheduled Task. 'Scheduled Task Wizard' appears.
• Click the <Next> button.

• Click the program you want to run. Click the 'Browse' button to select more programs. Select cleanmgr (for this example it is located at c:\windows\system32 directory).
• Check an appropriate 'Perform this task' option. Options are:

• • 'Daily
  • Weekly
  • Monthy
  • One time only
  • When my computer starts
  • When I log on. Click the 'Next' button.

• Select the Start Time and Start Date for this task. Click 'Next'.

• Enter the username and password of the user. The task will fail if no user credentials are supplied. Click 'Next'.

• Select 'Open advanced properties for this task when I click Finish' checkbox to set runtime properties. This is required step for Disk Clean automation.

• Append the following in the 'Run' field /sagerun:100 (100 is the value of sageset parameter in this example. Substitute this value if you had entered a different sageset value).
• Click the 'Apply' button. Enter Account Information details and click 'OK'.
• Disk Clean utility will run at the designated schedule based on the parameters defined.

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